Improvement in steam-pumps



CHARLES swlNscoE.

Improvement in Steam Pumps.

N0.124,639; y Y Patented Mrch12',872.

NITED STATES PATENT OFFICE.

' IMPROVEMENT IN STEAM-PUMPS.

Specication forming part of. Letters Patent No. 124,639, dated March 12, 1872.

two plunger-pumps, A and B; one pump, A,

being arranged like the ordinary plungerpump, and the other pump, B, being so arranged as to force in the opposite direction from the pump A. This fully illustrates my invention, which consists,generally and broadly, in attaching to the same side of a piston (which is usually the piston of a direct-actin g steam -en gine) two or more plungers or pistons, by means of appropriate rodsor similar connection, the said plun gers or pistons being arranged in cylinders and provided with valves to force in opposite directions during the travel of' the steam-piston, said cylinders and valves being arranged in any of the known methods, or by improved methods of my own invention, and forming, when combined with the drivingengine, a new and improved steam-pump, differing essentially from the ordinary doubleacting pump, but retaining its el'ectiveness, while it has also new advantages resulting from its'peculiar arrangement. In some-cases it is found desirable to use more than two plungers or pistons, and in such case the force and work may be equalized by the relative diameters of the pistons or plungers. Details of arrangement may also differ to accommodate this construction of pump to diierent work; but- That I claim is- Connecting to the same side of a steam-.piston two or more pump-pistons or plungers which work in cylinders on the same end of the enginecylinder, part of said plungers or pistons being arranged to fonce while traveling .in one direction, and the others to force while moving in the opposite direction.

CHARLES SWINSCOE.

Witnesses:

J. B. GARDINER, HORACE G. HUTCHINs. 

